[Changes in polyamine levels in Citrus sinensis Osb. cv. Valencia callus during somatic embryogenesis].
Identifieur interne : 002792 ( Main/Merge ); précédent : 002791; suivant : 002793[Changes in polyamine levels in Citrus sinensis Osb. cv. Valencia callus during somatic embryogenesis].
Auteurs : Hua-Ying Liu [République populaire de Chine] ; Lang-Tao Xiao ; Xu-Dong Lu ; Jia-Jin Hu ; Shun Wu ; Chang-Zheng He ; Xiu-Xin DengSource :
- Zhi wu sheng li yu fen zi sheng wu xue xue bao = Journal of plant physiology and molecular biology [ 1671-3877 ] ; 2005.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Polyamines.
- embryology : Citrus sinensis.
- metabolism : Citrus sinensis.
- Time Factors.
Abstract
Somatic embryogenetic capability and changes in polyamine level and their relationship were analyzed using the long-term (8 years) subcultured calli of Citrus sinensis Osb. cv. Valencia as materials. The results showed that endogenous polyamine contents in embryogenic calli were higher than those in non-embryogenic calli, and the embryogenetic capability was positively correlated to the levels of endogenous polyamines. When the calli were transferred to a differentiation medium, the putrescine content rapidly increased and reached a peak, then fell gradually. Applying exogenous putrescine raised the embryogenesis frequency and endogenous putrescine level. It indicated that increase in putrescine content at early stage of differentiation promoted embryogenesis. With the development of somatic embryo, spermidine content reached its the highest level at globular embryo stage, spermine content rose and reached a peak at a later stage of globular embryo development. Furthermore, changes of the putrescine, spermidine and spermine contents during somatic embryogenesis were similar in Valencia calli which had different ploidy levels, but their contents decreased following the increasing of ploidy level. Changes in arginine decarboxylase activity were positively correlated to the polyamine levels, which suggest that the later is a key factor in regulating the polyamine levels during somatic embryogenesis in citrus plants.
PubMed: 15961902
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pubmed:15961902Le document en format XML
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Valencia callus during somatic embryogenesis].</title><author><name sortKey="Liu, Hua Ying" sort="Liu, Hua Ying" uniqKey="Liu H" first="Hua-Ying" last="Liu">Hua-Ying Liu</name><affiliation wicri:level="1"><nlm:affiliation>Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410128, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410128</wicri:regionArea><wicri:noRegion>Changsha 410128</wicri:noRegion></affiliation></author><author><name sortKey="Xiao, Lang Tao" sort="Xiao, Lang Tao" uniqKey="Xiao L" first="Lang-Tao" last="Xiao">Lang-Tao Xiao</name></author><author><name sortKey="Lu, Xu Dong" sort="Lu, Xu Dong" uniqKey="Lu X" first="Xu-Dong" last="Lu">Xu-Dong Lu</name></author><author><name sortKey="Hu, Jia Jin" sort="Hu, Jia Jin" uniqKey="Hu J" first="Jia-Jin" last="Hu">Jia-Jin Hu</name></author><author><name sortKey="Wu, Shun" sort="Wu, Shun" uniqKey="Wu S" first="Shun" last="Wu">Shun Wu</name></author><author><name sortKey="He, Chang Zheng" sort="He, Chang Zheng" uniqKey="He C" first="Chang-Zheng" last="He">Chang-Zheng He</name></author><author><name sortKey="Deng, Xiu Xin" sort="Deng, Xiu Xin" uniqKey="Deng X" first="Xiu-Xin" last="Deng">Xiu-Xin Deng</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2005">2005</date><idno type="RBID">pubmed:15961902</idno><idno type="pmid">15961902</idno><idno type="wicri:Area/PubMed/Corpus">000D04</idno><idno type="wicri:Area/PubMed/Curation">000D04</idno><idno type="wicri:Area/PubMed/Checkpoint">000D04</idno><idno type="wicri:Area/Ncbi/Merge">000390</idno><idno type="wicri:Area/Ncbi/Curation">000390</idno><idno type="wicri:Area/Ncbi/Checkpoint">000390</idno><idno type="wicri:doubleKey">1671-3877:2005:Liu H:changes:in:polyamine</idno><idno type="wicri:Area/Main/Merge">002792</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">[Changes in polyamine levels in Citrus sinensis Osb. cv. Valencia callus during somatic embryogenesis].</title><author><name sortKey="Liu, Hua Ying" sort="Liu, Hua Ying" uniqKey="Liu H" first="Hua-Ying" last="Liu">Hua-Ying Liu</name><affiliation wicri:level="1"><nlm:affiliation>Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410128, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410128</wicri:regionArea><wicri:noRegion>Changsha 410128</wicri:noRegion></affiliation></author><author><name sortKey="Xiao, Lang Tao" sort="Xiao, Lang Tao" uniqKey="Xiao L" first="Lang-Tao" last="Xiao">Lang-Tao Xiao</name></author><author><name sortKey="Lu, Xu Dong" sort="Lu, Xu Dong" uniqKey="Lu X" first="Xu-Dong" last="Lu">Xu-Dong Lu</name></author><author><name sortKey="Hu, Jia Jin" sort="Hu, Jia Jin" uniqKey="Hu J" first="Jia-Jin" last="Hu">Jia-Jin Hu</name></author><author><name sortKey="Wu, Shun" sort="Wu, Shun" uniqKey="Wu S" first="Shun" last="Wu">Shun Wu</name></author><author><name sortKey="He, Chang Zheng" sort="He, Chang Zheng" uniqKey="He C" first="Chang-Zheng" last="He">Chang-Zheng He</name></author><author><name sortKey="Deng, Xiu Xin" sort="Deng, Xiu Xin" uniqKey="Deng X" first="Xiu-Xin" last="Deng">Xiu-Xin Deng</name></author></analytic><series><title level="j">Zhi wu sheng li yu fen zi sheng wu xue xue bao = Journal of plant physiology and molecular biology</title><idno type="ISSN">1671-3877</idno><imprint><date when="2005" type="published">2005</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Citrus sinensis (embryology)</term><term>Citrus sinensis (metabolism)</term><term>Polyamines (metabolism)</term><term>Time Factors</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Polyamines</term></keywords><keywords scheme="MESH" qualifier="embryology" xml:lang="en"><term>Citrus sinensis</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Citrus sinensis</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Time Factors</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Somatic embryogenetic capability and changes in polyamine level and their relationship were analyzed using the long-term (8 years) subcultured calli of Citrus sinensis Osb. cv. Valencia as materials. The results showed that endogenous polyamine contents in embryogenic calli were higher than those in non-embryogenic calli, and the embryogenetic capability was positively correlated to the levels of endogenous polyamines. When the calli were transferred to a differentiation medium, the putrescine content rapidly increased and reached a peak, then fell gradually. Applying exogenous putrescine raised the embryogenesis frequency and endogenous putrescine level. It indicated that increase in putrescine content at early stage of differentiation promoted embryogenesis. With the development of somatic embryo, spermidine content reached its the highest level at globular embryo stage, spermine content rose and reached a peak at a later stage of globular embryo development. Furthermore, changes of the putrescine, spermidine and spermine contents during somatic embryogenesis were similar in Valencia calli which had different ploidy levels, but their contents decreased following the increasing of ploidy level. Changes in arginine decarboxylase activity were positively correlated to the polyamine levels, which suggest that the later is a key factor in regulating the polyamine levels during somatic embryogenesis in citrus plants.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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